Training on same/different days

Apologies if this has already been discussed; I didn't see any thread to that effect but there are so many, I might have missed it.

I will be running my first marathon next year in London. I don’t know if I should laugh or cry!

Obviously the event is on a Sunday, so it would make sense to do my long runs also on Sundays. However, for practical reasons, it would suit me better to do those long runs on Saturdays. On D-day, would it matter? If I do every single long run on a Saturday during training, would my body react differently/badly to running on Sunday instead on marathon day? Would it be better to try and vary Saturdays and Sundays during training?

It's probably a good idea to try and run at about the same time that you'll be racing at - just so your body clock is onboard with it.
I always long run Saturdays anyway - and if the weather is awful you still have a possibility of running on Sunday if you need to.

the time of day might make a difference..........if you were to always do your long run at 4 am or 6 pl then it might be harder to know how to fuel up for a 10 am start.........and also the temperature can make a difference.if you were to always run at 4 am in winter in the cold and we get a heat wave in april.....#

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